Askren is an absolute beast on the wrestling mat. There's just no questioning his wrestling skills and talent. That said, yes, this is MMA and in the cage it's far different especially when striking is involved (ie. for setups). GSP's setups are great, his feints and fakes before shooting or actually throwing a strike or two (jabs etc) and then shooting in for the TD. Josh Koscheck is also a beast on the wrestling mat but he's also more than proven to be a beast in the MMA cage too with his wrestling and takedowns. Askren isn't KOS, he doesn't have the explosiveness or that bulldozing train of a double-leg TD that KOS has shown with regularity over the years against the highest level MMA fighters (including GSP himself).
I understand where Askren is actually coming from but this isn't wrestling, this is a different sport altogether. Askren feels like he isn't getting the credit he feels is due to him for his wrestling and the vast accomplishments he's had on the mat and in MMA (in Bellator for example). But, until he faces elite wrestlers in the UFC, what does he expect?! If/when he faces a guy like KOS and can outwrestle him THEN he can have an actual say that holds some water. He's coming off as bitter and needs to swallow his pride for now until he can prove otherwise (that he's a better MMA wrestler than GSP is).